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1620 <br /> ve Court <br /> of I HICIMIL If R ' ,'f i'-' Sacram ntotl CA 95864 <br /> ENGINEERING AND ENVIRONMENTAL SERVICES �� O3r 3'? P,° �2; 2� el 485-7222 <br /> Telephone: 916)485-8098 <br /> 29 October 1997 <br /> Ms. Margaret Lagorio <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 East Weber Street <br /> Stockton, California 95202 <br /> Subject: Addendum to Work Plan for Investigation of Storm Drain Inlets <br /> Stockton Unified School District <br /> Maintenance and Transportation Center <br /> HLI 00816 <br /> Dear Ms. Lagorio: <br /> We previously submitted an application for a permit to drill soil borings at the Stockton Unified <br /> School District's Maintenance and Transportation Center. A work plan for the proposed <br /> investigation accompanied our 24 October 1997 application submittal. We are amending the <br /> number of samples indicated in the work plan that will be analyzed from each boring. Given the <br /> shallow depths of the soil borings(5 to 10 feet),we are proposing to analyze only one sample from <br /> each soil boring, unless field screening indicates that deeper borings are warranted and additional <br /> samples are appropriate. <br /> We have arranged for the drilling to occur on November e and 5d, assuming that the County can <br /> issue permits by that date. Please let us know as,soon as possible if this schedule is not feasible. <br /> Sincerely yours, <br /> HELMICK& LERNER INC. <br /> xz�t/ ICS <br /> Noel M. Lerner <br /> Project Manager <br /> cc: Roy Knight-Stockton Unified School District <br /> Z:\P\00816\WP Adendum.doc <br />